Missing Image after Copying a Master Source

If I copy a Master Source, image links associated with the Master Source are not copied. Is this a bug, or is this the way it's supposed to work?

I would prefer that image links be copied when a Master Source is copied. Granted that the image links are probably not appropriate to the new Master Source I'm creating from the copy and the links therefore will probably have to be modified. But that's true of nearly all other data in the new copy of the Master Source and that's the whole point of doing the copy. The copy becomes sort of a "template" (but not a template in the sense of a source template) to give me formatting information, and then I replace the data. I would like to take the same approach with the image links after copying a Master Source.